rotation point vs. "object"

[Travis Bower]

Hey,

I am having trouble rotating a point.

The ToolTip says to select the object first.

It seems to me this is wrong when using a single point.  See the top part of the screen shot.

I selected the points in the numerical order.  So it appears to me that the 'rotation point' is the first one selected.

When I use a triangle for the object, it works fine.  In fact, I can select either the object or the rotation point in either order.

[p.s. Make sure you are in the correct mode degree.  For negative values, make the text box first or type the value and then edit it later.]

 

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[Marc Garneau]

Correct, to rotate a point you need to select the centre of rotation first.  So, yes, the tooltip is misleading in that case.  The cursor icon is a helpful indicator though.

Marc

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[Travis Bower]

Thanks Marc.

Seems to me that a new user might easily get exasperated...

The cursor indicator is helpful.  Hopefully TI will will place something like it on the Npad [Nspire App for the iPad].

Which leads me to a second point

It would be nice if there was a directional arrow on the angle when three points are typed in (rather than using a value).  Care must be taken when arranging the three points--direction is implied at the time, but not easily inferred after the fact.

p.s. thanks for taking the time to present Lua last night.  You two were excellent.

[Marc Garneau]

Thanks, Travis.  I'm glad you enjoyed it.

I agree, when the TI-Nspire goes to the trouble of drawing in the arc for an angle, a directional arrow would be nice.